Paul,

> It's like a flag has been set within the SB installer that a previous
> version must be there when its trying to validate the path from the
> dialog.....

The "Detect Previous Version..." function is completely "silent". It does
not display any message box. And SB does not do the previous version
checking on its own (and there is no flag to do this).

Try to run the install with the /E event logging option and then let us
check the generated "c:\sbevents.txt". Perhaps we can see what displays
this message. And a screenshot would be great.

Friedrich